/*
 *  Copyright 2013 National Institute of Advanced Industrial Science and Technology
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.sss.mapreduce.example;

import org.sss.mapreduce.Output;
import org.sss.mapreduce.Reducer;
import org.sss.mapreduce.datatype.PackableInt;
import org.sss.mapreduce.datatype.PackableString;

public class IntSumReducer extends Reducer {
  public void reduce(Context context,
                     PackableString key, Iterable<PackableInt> values,
                     Output<PackableString, PackableInt> output) throws Exception {
    int sum = 0;
    for (PackableInt v: values) {
      sum += v.get();
    }
    output.write(key, new PackableInt(sum));
  }
}
